hippo_dream_create_shadow

CYCLE #34 — Hippo Dreams building block: snapshot-copia

SERVERVerimem SOURCEaureliocpr-ctrl/verimem

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/verimem/hippo-dream-create-shadow.md

WHAT IT DOES

What hippo_dream_create_shadow does on Verimem

AI agents use hippo_dream_create_shadow to create or update resources in Verimem, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Verimem environment.

RISK

Why hippo_dream_create_shadow is rated Medium

The 'create' verb combined with 'snapshot-copia' suggests the tool writes/creates a new snapshot or shadow copy of memory state. This is reversible (snapshots can be replaced or discarded) and has moderate blast radius if an agent creates malicious snapshots or corrupts the memory record, but falls short of destructive (no irreversible deletion) or execute (no code/command execution).

From the tool's definition Tool name includes 'create' and description references 'snapshot-copia' (snapshot creation), indicating the tool creates or instantiates a new data structure or state record. No deletion or irreversible destruction is implied.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs hippo_dream_create_shadow safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Verimem, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For hippo_dream_create_shadow, this is the rule to start with:

hippo_dream_create_shadow Rate-limited

hippo_dream_create_shadow stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "hippo_dream_create_shadow": {
      "limits": [
        {
          "counter": "hippo_dream_create_shadow_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Verimem, apply this rule, and every hippo_dream_create_shadow call is checked against it from then on.

FAQ

Questions about hippo_dream_create_shadow

What does the hippo_dream_create_shadow tool do? +

CYCLE #34 — Hippo Dreams building block: snapshot-copia. It is categorised as a Write tool in the Verimem MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on hippo_dream_create_shadow? +

Register the Verimem MCP server in PolicyLayer and add a rule for hippo_dream_create_shadow: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Verimem. Nothing to install.

What risk level is hippo_dream_create_shadow? +

hippo_dream_create_shadow is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit hippo_dream_create_shadow? +

Yes. Add a rate_limit block to the hippo_dream_create_shadow rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block hippo_dream_create_shadow completely? +

Set action: deny in the PolicyLayer policy for hippo_dream_create_shadow. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides hippo_dream_create_shadow? +

hippo_dream_create_shadow is provided by the Verimem MCP server (aureliocpr-ctrl/verimem). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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